Southwest Airlines

SWA21 / WN21

ICAO: SWA21 IATA: WN21

Click here to see all flights

Flight schedule

Select flight date

Departure

Arrive

Aircraft

Effective

Avalibility

11:30

Phoenix (PHX) T4

13:25

Sacramento (SMF) TB

Boeing 737MAX 8 Passenger

Begins

2026-07-07

Valid to

2026-07-29

sun

mon

tue

wed

thu

fri

sat

Tuesdays and Wednesdays

Southwest Airlines

SWA21

Duration

1h 55m

Distance

650 mi, 1046 km

Coreshare

Same day flight

Yes

Terminal

Departure: T4 Arrival: TB

Meals

Seats

175

Economy

175

13:25

Los Angeles (LAX) T1

14:45

Oakland (OAK) T2

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-09-08

Valid to

2026-09-30

sun

mon

tue

wed

thu

fri

sat

Tuesdays and Wednesdays

Southwest Airlines

SWA21

Duration

1h 20m

Distance

339 mi, 545 km

Coreshare

Same day flight

Yes

Terminal

Departure: T1 Arrival: T2

Meals

Seats

137

Economy

137

12:00

Dallas (DAL) T1

13:10

Houston (HOU)

Boeing 737MAX 8 Passenger

Begins

2026-10-04

Valid to

2026-10-25

sun

mon

tue

wed

thu

fri

sat

Every Sunday

Southwest Airlines

SWA21

Duration

1h 10m

Distance

241 mi, 388 km

Coreshare

Same day flight

Yes

Terminal

Departure: T1

Meals

Seats

175

Economy

175

12:00

Dallas (DAL) T1

13:10

Houston (HOU)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-11-24

Valid to

2026-11-30

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday and Wednesday

Southwest Airlines

SWA21

Duration

1h 10m

Distance

241 mi, 388 km

Coreshare

Same day flight

Yes

Terminal

Departure: T1

Meals

Seats

137

Economy

137

13:45

Houston (HOU)

16:55

Louisville (SDF)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-11-24

Valid to

2026-11-30

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday and Wednesday

Southwest Airlines

SWA21

Duration

2h 10m

Distance

807 mi, 1298 km

Coreshare

Same day flight

Yes

Terminal

Meals

Seats

137

Economy

137

08:55

Chicago (MDW)

11:25

Dallas (DAL) T1

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-11-24

Valid to

2026-11-30

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday and Wednesday

Southwest Airlines

SWA21

Duration

2h 30m

Distance

798 mi, 1284 km

Coreshare

Same day flight

Yes

Terminal

Arrival: T1

Meals

Seats

137

Economy

137

17:35

Louisville (SDF)

19:10

Baltimore (BWI)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-11-24

Valid to

2026-11-30

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday and Wednesday

Southwest Airlines

SWA21

Duration

1h 35m

Distance

496 mi, 798 km

Coreshare

Same day flight

Yes

Terminal

Meals

Seats

137

Economy

137

12:00

Dallas (DAL) T1

13:10

Houston (HOU)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-18

Valid to

2026-12-23

sun

mon

tue

wed

thu

fri

sat

Every day of the week except Thursdays and Saturdays

Southwest Airlines

SWA21

Duration

1h 10m

Distance

241 mi, 388 km

Coreshare

Same day flight

Yes

Terminal

Departure: T1

Meals

Seats

137

Economy

137

13:45

Houston (HOU)

16:55

Louisville (SDF)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-18

Valid to

2026-12-23

sun

mon

tue

wed

thu

fri

sat

Every day of the week except Thursdays and Saturdays

Southwest Airlines

SWA21

Duration

2h 10m

Distance

807 mi, 1298 km

Coreshare

Same day flight

Yes

Terminal

Meals

Seats

137

Economy

137

08:55

Chicago (MDW)

11:25

Dallas (DAL) T1

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-18

Valid to

2026-12-23

sun

mon

tue

wed

thu

fri

sat

Every day of the week except Thursdays and Saturdays

Southwest Airlines

SWA21

Duration

2h 30m

Distance

798 mi, 1284 km

Coreshare

Same day flight

Yes

Terminal

Arrival: T1

Meals

Seats

137

Economy

137

17:35

Louisville (SDF)

19:10

Baltimore (BWI)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-18

Valid to

2026-12-23

sun

mon

tue

wed

thu

fri

sat

Every day of the week except Thursdays and Saturdays

Southwest Airlines

SWA21

Duration

1h 35m

Distance

496 mi, 798 km

Coreshare

Same day flight

Yes

Terminal

Meals

Seats

137

Economy

137

12:00

Dallas (DAL) T1

13:10

Houston (HOU)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-27

Valid to

2027-01-03

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday, Wednesday and Sunday

Southwest Airlines

SWA21

Duration

1h 10m

Distance

241 mi, 388 km

Coreshare

Same day flight

Yes

Terminal

Departure: T1

Meals

Seats

137

Economy

137

13:45

Houston (HOU)

16:55

Louisville (SDF)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-27

Valid to

2027-01-03

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday, Wednesday and Sunday

Southwest Airlines

SWA21

Duration

2h 10m

Distance

807 mi, 1298 km

Coreshare

Same day flight

Yes

Terminal

Meals

Seats

137

Economy

137

08:55

Chicago (MDW)

11:25

Dallas (DAL) T1

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-27

Valid to

2027-01-03

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday, Wednesday and Sunday

Southwest Airlines

SWA21

Duration

2h 30m

Distance

798 mi, 1284 km

Coreshare

Same day flight

Yes

Terminal

Arrival: T1

Meals

Seats

137

Economy

137

17:35

Louisville (SDF)

19:10

Baltimore (BWI)

Boeing 737-700 Passenger (Scimitar Winglets)

Begins

2026-12-27

Valid to

2027-01-03

sun

mon

tue

wed

thu

fri

sat

Every Monday, Tuesday, Wednesday and Sunday

Southwest Airlines

SWA21

Duration

1h 35m

Distance

496 mi, 798 km

Coreshare

Same day flight

Yes

Terminal

Meals

Seats

137

Economy

137

TERMINAL 1

According to schedule

Live tracker

DAL

Dallas, US

left TERMINAL 1

Dallas - DAL

SUNDAY 31-MAY-2026

12:50 GMT-0500

HOU

Houston, US

arrives TERMINAL N/A

Houston - HOU

SUNDAY 31-MAY-2026

14:05 GMT-0500

General route info

Frequency:

Daily

Sun Mon Tue Wed Thu Fri Sat

Direct distance

240 miles, 386 km

Actual distance

241 miles, 388 km

0.42%

Flight time

1h 15m

Flights / Week

80 flights

Seats / Week

137 seats/flight

10960 seats/week

Upcoming scheduled flights in the coming 30 days

Date

Time

From

To

Aircraft

Status
Date:

Time:

From:

To:

Aircraft:

Status:

31 May 2026

12:50

Dallas(DAL)

Houston(HOU)

Boeing 737-800 (winglets) Passenger/BBJ2

WN21

SWA21 information

A domestic route in USA departing from Dallas (DAL) and arriving at Houston (HOU).

The timezones of the departure and arrival airports are identical, UTC -5.

The flight distance is 241 miles, or 388 km.

For direct flights, the flight time is about 1:15.

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Other flights between Dallas and Houston with Southwest

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Southwest Airlines

SWA21 / WN21

Flight schedule

General route info

Frequency:

Direct distance

Actual distance

Flight time

Flights / Week

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Upcoming scheduled flights in the coming 30 days

SWA21 information

Dallas (DAL) Flight Deals

Dallas Hotel Deals

Dallas (DAL) Rental Cars

Dallas (DAL) Parking

Other flights between Dallas and Houston with Southwest

Popular Airports

Popular Airlines

Southwest Airlines

SWA21 / WN21

Flight schedule

General route info

Frequency:

Direct distance

Actual distance

Flight time

Flights / Week

Seats / Week

Upcoming scheduled flights in the coming 30 days

SWA21 information

Dallas (DAL) Flight Deals

Dallas Hotel Deals

Dallas (DAL) Rental Cars

Dallas (DAL) Parking

Select Destination Airport

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Other flights between Dallas and Houston with Southwest

Dallas (DAL) Flight Deals

Dallas Hotel Deals

Dallas (DAL) Rental Cars

Dallas (DAL) Parking

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